Microscope.



K. M. STAHL;

MICROSGOPE.

AIPLIOATIO'N FILED MAR. 27, 1909. RBNEWBD AUG. 19, 1911.

I L, y Panama Apr. 9, 1912.

KARL M; STAHL, on NEW YORK, n. 1'.

IJIICROSCOPE.

Loeaooo.

Specification of Letters Ptent.

Application ied March 27, 1909, Serial No. 486,225." Renewed August 19, 1.911. Serial No. 645,0l3;

To all 'whom 'it may concern Be it known that KARL M. STAHL, citi- Zen o t' the United States. residing at New York. in the county oit' New York and State ot' New York, have invented certain new and useful lmproven'ients in lilicroscopes, of which the following, is a specification.

The present invention relates to an iinprovement on microscopes and particularly of the kind with which a series of microscopic viewsI are successively and intermittently brought to be displayed before the `trom and replaced by a band containing a diti'erent series of views.

.A further object oi my invention is to make the mechanism very simple and cheap.

To make my invention more clear the saine is illustrated in the accompanying drawing, in .vhich- Figure lis an inner view of the microscope. the face disk being removed; Fig. 2 is a section on line 2 2 ot Fig. 3 showing.,r the feeding mechanism, and Fig. 3 is a cross section. on line 3-3 of Fig. l.

ln the drawing i denotes the casing' and 2 the removahle face diskor c ver. walls ot the casing and the cover are provided with opposite pert'oraticns and Il,

, the opening serving for the penetration of light and 3 as the sight opening. Borne in the said wallsI ot the easing and cover is a spindle 4 which carries a ratchet wheel 5 andl a disk (3 having on its circumference semicylindrical grooves T. T he wheel 5 and the dish t3 may he rigidly connected or integral with one'another and are both solid on the .spindle 4. A dog,- 9 pivoted atlt) to the inner surface ot the cover and actuated by a spring il constantly engages with the teeth ot the ratchet wheel, and thereby tends to retain the wheel in its position. Guided through a recess in the cir- .jcumterence of the casing -l and'. bet-Ween the face disk 2 and a piece l2 upon a pin 18 The face i is a'slotted bar ll, the'linnerend o'li which is formed as pawl l5 adapted to engage the teeth ot the ratchet wheel 5. and upfu the depression ot the har to feed tiles-aid wheel. The bar has a lateral projection il; which cmistantly restsou aspring' 1T tending to return the har to its outer position. nother spring 1S presses the lower portion oi the bar constantly in=engage1uent with the teeth of the ratchet wheel.

Mounted on spindles parallel to the spindie i are idle rollers 1S), 20, Q1, 22 and-Q3 which are to serve as guides for the band carrying the lenses, which will now be described.

The 'lenses 2li are pin shaped or cylindrical bodies which are placed between two flexible and endless bands 25 at short distances apart from one another. ri`he.h.firuls are sewn or otherwise attached together to form pockets in which the lenses may be tightly held in position. One end of these lenses beers the view which may be photographed or otherwise produced thereon. rllhe width of the band conforms substantially with 'the length of the lenses and also with the length of the grooves in the disk 7, such that the cyiindr'eal bodies ot the. lenses may engage and be propelled by the latterwhen the disk is being;r vtied. rl`he band is guided around the disk (i and the guide rollers 19,120. 2]. Q2. 2 3, as shown in Fig. l, so that in feeding the band. the lenses are caused to pass between the two perfor-ations 3 and 3, in the casing. displaying the views through the sight opening 3.

The distance between the individual lenses is' so calculated that b v the de'iressionot the har lil, the disk is fed a ractiono'f a revolution and a new lens is brought into register with the openings 3. 3".

t.y is clear that some modifications may he made without deviating from the spiritof mv invention.

lfvlhat l claim and desire to secure by Let- I ters latentis l. ln a microscope ol the kind descrii'ied.V the combination with a grooved Wheel, of an endless carrier composed of two flexible strips sewed together at intervals to torni pockets between themselves, pin shaped view bearing lenses mounted in said pockets and toi-Illing corrugations, `whereby the carrier engaging the grooved wheel is caused tobeted. i v- 2. In a microscope of the hind' specified,

the combination with a grooved wheel of an endlose carrier composed of two 'flexible strips sewed togethel at intervals to form pockets between themselves, pin Shaped View bearing lenses mounted in .said pockets forming coi'iugations, whereby the carrier engaging the groovecl wheel is fed and means for feeding said wheel.

3. In a microscope of thc kind specified, the cmnbination with a gl'ooved wheel of an endless carrier composed of two flexible strips sewed together at inter Yals to form pockets between themselves, pin shaped View bearing lensesnlounted in said pockets forming cori'llgations whereby thc carrier engaging the greeted wheel ie fed, a ratchet wheel f'fmnected with the grooved wheel and a spring actuated, movable bar the lower end of which is formed as a paw] engaging the ratchet. wheelvand serving for feeding the grooved wheel.

In testimony whereof I aiix my signature in presence of two witnesses.

KARL M. STAHL.

IVitnesses:

JOSEPH E. GAVAN-Anon, MAX D. ORDMANN 

